Etch a PCB using DLP printer
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1 x DLP printer: FLsun-S LINK
Sodium carbonate: LINK eBay
Sodium persulfate: LINK eBay
Photosensible film: LINK eBay
Copper PCB boards: LINK eBay
PCB etch kit: LINK eBay
Wire, soldering iron, solder, etc...